The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 31, 2016
Filed:
Aug. 12, 2014
Hector Sanchez, Cedar Park, TX (US);
Gayathri A. Bhagavatheeswaran, Austin, TX (US);
Hector Sanchez, Cedar Park, TX (US);
Gayathri A. Bhagavatheeswaran, Austin, TX (US);
FREESCALE SEMICONDUCTOR, INC., Austin, TX (US);
Abstract
Receivers for memory interfaces and related methods are disclosed having pulsed control of input signal attenuation networks. Embodiments include a DC common mode attenuation network, an AC coupling network, a pulse generator, and an amplifier. The pulse generator receives the output of the amplifier and generates a pulse signal that in part controls the operation of the attenuation network. The attenuation network generates an attenuated signal having reduced DC common mode levels. This attenuated signal is combined with an AC component passed by the AC coupling network. The resulting combined signal is detected and amplified by the amplifier. Different voltage domains are used for the attenuation network and the AC coupling network as compared to the amplifier and the pulse generator. By attenuating DC common mode levels while maintaining AC signal levels, the disclosed embodiments allow for proper signal detection over a wide range of DC common mode levels.